get_CH: Compute CH Index

Description Usage Arguments Value References Examples

View source: R/clues_CH.R

Description

Compute CH index for a given partition of a data set.

Usage

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get_CH(y, mem, disMethod = "Euclidean")

Arguments

y

data matrix which is an R matrix object (for dimension > 1) or vector object (for dimension=1) with rows be observations and columns be variables.

mem

vector of the cluster membership of data points. The cluster membership takes values: 1, 2, , g, where g is the estimated number of clusters.

disMethod

specification of the dissimilarity measure. The available measures are “Euclidean” and “1-corr”.

Value

The value of the CH index.

References

Calinski, R.B., Harabasz, J., (1974). A dendrite method for cluster analysis. Communications in Statistics, Vol. 3, pages 1-27.

Wang, S., Qiu, W., and Zamar, R. H. (2007). CLUES: A non-parametric clustering method based on local shrinking. Computational Statistics & Data Analysis, Vol. 52, issue 1, pages 286-298.

Examples

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Example output

[1] 458.7412

clues documentation built on Dec. 4, 2019, 1:09 a.m.